Wilderness Gateway .pdf

VICINITY MAP

PROJECT LOCATION

Granite Tower Building 222 N. 32nd St., Suite 700

P.O. Box 31318 Billings, MT 59107-1318

406-656-6399 406-656-6398 (fax) dowlhkm.com

WALLACE

KELLOGG

COEUR D' ALENE

MOSCOW

LEWISTON

SALMON

TWIN

FALLS

POCATELLO

IDAHO

FALLS

CHALLIS

McCALL

BOISE

SAND POINT

INDEX TO SHEETS

For

CONSTRUCTION PLANS

U.S. DEPARTMENT OF AGRICULTURE

FOREST SERVICE

LOCHSA RANGER DISTRICT

CLEARWATER NATIONAL FOREST

IDAHO COUNTY, IDAHO

REHABILITATION WORK ON

(BRIDGE NO. 1649-0.1)

CLEARWATER NATIONAL FOREST

12370 HIGHWAY 12

OROFINO, ID 83544

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APPROACH LOOKING AHEAD

PROFILE LOOKING DOWNSTREAM

ESTIMATED QUANTITIES

ITEM DESCRIPTION METHOD OF

MEASUREMENT QUANTITY

15101 MOBILIZATION LSQ 1

55609 BRIDGE APPROACH RAILING, TYPE I, CLASS A CQ 150

55607 CQ 4TERMINAL SECTION, CLASS B

UNIT

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55601 T101 BRIDGE RAILING CQ 535LF

20305

REMOVAL OF STRUCTURES AND OBSTRUCTIONS

(REMOVE EXISTING RAIL & CURB - BRIDGE & APPROACH) LSQ 1LS

SPECIFICATIONS: MATERIALS AND CONSTRUCTION OF THIS STRUCTURE SHALL BE IN ACCORDANCE WITH THE STANDARD SPECIFICATIONS FOR CONSTRUCTION OF ROADS AND BRIDGES ON FEDERAL HIGHWAY

PROJECTS, FP-03, AS MODIFIED FOR THIS CONTRACT.

POSTS & TIMBERS: ALL POSTS AND TIMBERS SHALL BE WESTERN WOOD WITH GRADE AS NOTED BELOW, CONFORMING TO THE CURRENT WWPA OR WCLIB GRADING RULES FOR WESTERN LUMBER.

MEMBER COMMERCIAL GRADE

APPROACH RAIL POSTS & BLOCKS (S4S) NO. 1

TREATMENT: AFTER FABRICATION, ALL TIMBER SHALL BE INCISED AND THEN PRESSURE TREATED IN ACCORDANCE WITH AWPA C14 FOR POST, GUARDRAIL AND SPACER BLOCKS USEAGE. TREATMENT SHALL COMPLY WITH THE REQUIREMENTS OF THE 2006 EDITION OF WWPI'S “BEST MANAGEMENT PRACTICES FOR

THE USE OF TREATED WOOD IN AQUATIC ENVIRONMENTS”.

MATERIALS: STRUCTURAL STEEL SHAPES AND HARDWARE SHALL BE IN ACCORDANCE TO THE FOLLOWING:

W-SHAPES: - ASTM A992 (AASHTO M270, GR. 50)

ANGLES, CHANNELS, PLATES & BARS: - ASTM A36 (AASHTO M270, GR. 36)

HSS SECTIONS (STRUCTURAL TUBING): - ASTM A500, GRADE B

STEEL PIPE (ROUND): - ASTM A53, GRADE B

W-BEAM GUARDRAIL: - AASHTO M180, CLASS A, TYPE I

W-BEAM TERMINAL PIECES: - AASHTO M180, CLASS B, TYPE I

ALL FASTENERS (BOLTS): - ASTM A307

ANCHOR RODS: - ASTM F1554, GRADE 36

CABLE ASSEMBLY (FOR GUARDRAIL): - ASTM A741 (AASHTO M30)

ALL STEEL AND HARDWARE SHALL BE GALVANIZED IN ACCORDANCE TO AASHTO M111 AND M232 (ASTM A123

& A153), AS APPLICABLE, UNLESS NOTED OTHERWISE.

USE MALLEABLE IRON WASHERS AGAINST WOOD, UNLESS NOTES OTHERWISE.

CONCRETE FOR END ANCHORS AT APPROACH GUARDRAILS SHALL HAVE A MINIMUM 28 DAY COMPRESSIVE STRENGTH OF 3,000 PSI. WELDED WIRE FABRIC SHALL CONFORM TO AASHTO M55 (ASTM A185).

EXPANSION JOINTS. BACKER ROD & SEALANT SHALL BE IN ACCORDANCE TO FP-03, SECTION 712.01(G). USE 1” DIAMETER BACKER ROD AND COMPATIBLE SEALANT AS RECOMMENDED BY ROD MANUFACTURER.

SEALANT SHALL ADHERE TO CONCRETE.

FABRICATION: STRUCTURAL STEEL SHALL BE SHOP FABRICATED. WELDING SHALL CONFORM TO AWS STRUCTURAL WELDING CODE, D1.1 AND SHALL BE BY A CERTIFIED WELDER. ALL STEEL SHALL BE FABRICATED BEFORE BEING GALVANIZED, EXCEPT MINOR SHOP CUTTING. DRILLING AND WELDING IS PERMITTED ON GALVANIZED METAL, PROVIDED THESE AREAS ARE CLEANED AND REPAIRED WITH 2 COATS OF ZINC DUST-ZINC OXIDE PAINT MEETING FEDERAL SPECIFICATION TT-P-641 OR MILITARY SPECIFICATION

MIL-P-21035.

SUBMIT SHOP DRAWINGS FOR ALL STEEL MEMBERS FOR BRIDGE RAIL AND APPROACH GUARDRAIL. SHOW ALL DIMENSIONS AND FABRICATION DETAILS. ALL RAIL SPLICES SHALL OCCUR AT POSTS. W-BEAM METAL GUARDRAIL SECTIONS SHALL BE PRECURVED IN THE SHOP FOR BENDS LESS THAN 150 FT RADIUS.

ERECTION: NO FIELD CUTTING OR WELDING IS PERMITTED ON GALVANIZED METAL UNLESS APPROVED BY THE C.O. ALL BRIDGE AND APPROACH RAIL POSTS SHALL BE SET VERTICALLY AND THE RAILING ERECTED PARALLEL TO GRADE. THE CONTRACTOR SHALL FURNISH GALVANIZED STEEL SHIM PLATES AS REQUIRED TO ALIGN RAILING AND POSTS. FILL ALL UNUSED HOLES IN W-BEAM WITH STANDARD BUTTONHEAD BOLTS AND NUTS. AFTER ERECTION IS COMPLETE, BURR THREADS OF ALL RODS AND BOLTS TO PREVENT BACKING OFF OF NUTS. ALL DAMAGED GALVANIZED SURFACES SHALL BE REPAIRED WITH 2 COATS OF ZINC PAINT AS

SPECIFIED IN THE FABRICATION SECTION ABOVE.

ALL RAIL SPLICES SHALL OCCUR AT POSTS AND SHALL BE LAPPED IN THE DIRECTION OF TRAFFIC. THERE

SHALL BE NO MORE THAN ONE LAYER OF W-BEAM RAIL SPLICED AT EACH POST.

APPROACH GUARDRAIL POST HOLES SHALL BE A MINIMUM OF 18” IN DIAMETER, UNLESS AUGERED OR DRIVEN. BOTTOM OF EXCAVATED HOLES SHALL BE THOROUGHLY COMPACTED AND BACKFILL SHALL BE

THOROUGHLY TAMPED IN 4 INCH LAYERS.

GENERAL NOTES

55213 RESEAL EXPANSION JOINTS CQ 130LF

55214 PATCH CONCRETE DECK LSQ 1LS

* INFORMATION ONLY - NOT FOR BIDDING PURPOSES - REFER TO BID SCHEDULE

61911 AQ 1REMOVE & REINSTALL ROAD GATE EA

WORK ITEM

REFERENCE

SEE SHT 2

62201 AQ 4

62202 LARGE DUMP TRUCK AQ 4

HYDRAULIC EXCAVATOR WITH THUMB HR

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